Given:
A doctor orders are more thyroid half grain.
Required:
To convert the 1/2 grain into milligram.
Explanation:
Let
[tex]1\text{ grain}=64.8\text{ mg}[/tex]
Now 1/2 grain is,
[tex]\begin{gathered} =\frac{1}{2}\times64.80 \\ \\ =32.4mg \end{gathered}[/tex]
Final Answer:
The option 2 is correct.
33
